Here is an easy handyman job for any beginner. Assuming you aren’t afraid of heights, sure you could climb a ladder to reach the bulbs. But what if the bulbs are crazy high?
I guess it really depends on where the bulbs are located in relation to the walls.
Lots of people have extension ladders that they can lean against the wall and climb up to access the bulb, assuming it is very close to the ladder. If the bulbs is too far from the walls, you can certainly rent an A-frame ladder, but they you have the chore of transporting it to your house. This isn’t an easy task for ceilings that are 20 feet high.
The best and safest option is to use a telescoping pole with a suction cup on the end.
You can buy a small suction cup and screw it onto the end of any pole that has the same mating end. The telescoping poles are great for really high ceilings. The suction cup will have a string that hangs down so that you can break the suction. Make sure the cup is clean (which will make it somewhat tacky) and stick it to the bottom of the bulb. Turn the pole to unscrew the bulb and gently lower the bulb. Remove it and stick on a new bulb and reverse the process. Once you have the new bulb snug into its place, pull the string and you can move to the next bulb. You can buy an assortment of screw-on tools for removing different types of bulbs. You just need to choose the one that will work with your style of bulb.Swamp Cooler Pad Not Getting Wet » « How to Remove the Plug from Garbage Disposal